CN106824191A - Application of the bimetallic catalyst in hydrogenolysis of glycerin prepares 1,3- propane diols - Google Patents

Application of the bimetallic catalyst in hydrogenolysis of glycerin prepares 1,3- propane diols Download PDF

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CN106824191A
CN106824191A CN201510882004.1A CN201510882004A CN106824191A CN 106824191 A CN106824191 A CN 106824191A CN 201510882004 A CN201510882004 A CN 201510882004A CN 106824191 A CN106824191 A CN 106824191A
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catalyst
hydrogenolysis
moo
carrier
application according
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CN106824191B (en
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王爱琴
王佳
赵晓晨
张涛
雷念
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Zhongke Baiyijin Zhengzhou New Energy Technology Co ltd
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Dalian Institute of Chemical Physics of CAS
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Abstract

The patent is related to application of the bimetallic catalyst in hydrogenolysis of glycerin prepares 1,3-PD, and a kind of hydrogenolysis of glycerin prepares catalyst of 1,3-PD and preparation method thereof, and catalyst is by WOxCarrier loaded active component molybdenum oxide and platinum are constituted.The preparation method of catalyst includes:A) solvent-thermal method prepares catalyst carrier WOx;B) with the precursor solution incipient impregnation WO of platinumxThen it is vacuum dried and reduces, obtains Pt/WOx;C) by obtained Pt/WOxIncipient impregnation metamolybdic acid ammonium salt solution obtains final catalyst MoO after drying, calcining reduction againx-Pt/WOx.Catalyst obtained by the patent, hydrogenolysis generates 1,3-PD with high selectivity with a temperature of in certain Hydrogen Vapor Pressure can to make glycerine water solution.

Description

Application of the bimetallic catalyst in hydrogenolysis of glycerin prepares 1,3- propane diols
Technical field
The present invention relates to the catalyst that a kind of hydrogenolysis of glycerin prepares 1,3-PD, specially WOx Carrier loaded active component molybdenum oxide and platinum.
The invention is related to the preparation method and applications of above-mentioned catalyst, specially using solvent heat Method prepares WOx, active component platinum and molybdenum are supported using two step infusion processes, and investigate not The activity in hydrogenolysis of glycerin prepares 1,3- propane diols and selection with the catalyst under preparation condition Property.
Technical background
With developing rapidly for biodiesel, the by-product glycerin in production biodiesel process is big Amount is superfluous, and glycerine converting prepares high value chemicals turns into lifting Biodiesel economy Effective means.Glycerine can generate 1,3-PD, 1,2-PD etc. by hydrogenolysis, Wherein 1,3- propane diols is the important monomer for producing PTT (PTT). PTT is a kind of new type polyester fiber with biodegradability, and it overcomes poly- terephthaldehyde Sour glycol ester (PET) too hard and polybutylene terephthalate (PBT) (PBT) is too soft to be lacked Point, while have excellent resilience, chromatophilia, biological degradability etc., thus carpet, The industries such as Textile Engineering plastics have huge development potentiality.The industry of current 1,3- propane diols is raw Product method has the oxirane carbonyl hydrogenation method and Degussa and Dupont of Shell companies The acrolein hydration hydrogenation method of company.
Oxirane carbonyl hydrogenation method (Chinese patent CN1201407A) uses oxirane 3-HPA is generated with synthesis gas under cobalt-base catalyst, then by 3-HPA and hydrogen The method of 1,3- propane diols is hydrogenated under hydrogenation catalyst effect.Acrolein hydration method (in State patent CN93114516.3) it is dehydrated under solid acid catalyst using gaseous state glycerine hydrate Generation methacrylaldehyde, the methacrylaldehyde of generation is hydrated generation 3- hydroxyls third under acidic catalyst effect Aldehyde, the 3-HPA of generation under conventional hydrogenation catalyst Hydrogenation for 1,3-PD, together When by-product 1,2- propane diols.
Above-mentioned industrial manufacture process is complicated, and environmental pollution is serious, and gained 1,3-PD contains Impurity, needs further purified treatment.
Document (Appl.Microbiol.Biotechnol.1992,36,592-597) reports one The method that 1,3-PD is prepared using Clostridiurn strain bio conversions is planted, can be in 29h The glycerite conversion of 110g/l is obtained into the 1,3- propane diols of 56g/l afterwards, the method is subject to biology The influence of metabolic activities, low production efficiency, and because production concentration is low, purifies and separates Energy consumption needed for 1,3- propane diols is also very high.
Document (Catal.Commun.2008,9,1360-1363) reports one kind in 1,3- bis- Methyl -2- imidazolones are under solvent, hydrogenolysis of glycerin prepares the method for 1,3-PD, the method The yield of 1,3- propane diols is 24%.
The Tomishige seminars of Japan report the Rh/SiO of Re modifications2And Ir/SiO2Urge Agent, author is in Ir-Re/SiO2Fluid sulphuric acid (H is added under catalyst action+/ Re=1), hydrogen Gas initial pressure 8MPa, at 120 DEG C of reaction temperature, 36 is reacted in 20% glycerine water solution After h, the high income of 1,3-PD up to 38.0% has been obtained.Subsequent literature (Journal of Molecular Catalysis A:Chemical.2014,388,177-187) the 3rd is also reported to help Agent especially Ru it is prepared by hydrogenolysis of glycerin 1,3- propane diols facilitation it is most obvious.
The Jinho Oh of South Korea report the ZrO that Pt is supported on sulfuric acid acidifying2On, with DMI It is reaction medium, is 7.3MPa in initial hydrogen pressure, 24h is reacted at 170 DEG C of reaction temperature The high income of 1,3- propane diols up to 55.6% is obtained.
Organic solvent is employed in above-mentioned reaction as reaction medium, and the annex solution for being used The method of body acid, does not meet the requirement of Green Chemistry.
The direct hydrogenolysis of glycerine prepares 1,3-PD and has obtained very big concern in recent years, because its work Skill is simple, and raw material is cheap.Document (Chin.J.Catal.2012,33:Although 1257-1261) reporting A kind of simple mesoporous WO of Pt/3The catalyst of hydrogenolysis of glycerin 1,3-PD is directly used in, But the overall yield of 1,3- propane diols is still relatively low.So far, document (ChemSusChem 2013,6,1345-1347) it is 100% and the performance of selectivity up to 66% to report conversion ratio Optimal Pt/WOx/ AlOOH catalyst systems.But it is converted into unit noble metal catalyst unit For the 1,3-PD yield that time obtains, reduced levels are still in.Also there is text simultaneously Offer (Journal of Molecular Catalysis A:Chemical.2015,398,391-398) report Road WOxTo Pt/Al2O3Facilitation.Document (Chem.Lett.2012,41,1720- - 1722) AlO is reportedxTo Pt Nanoparticles/WO3In hydrogenolysis of glycerin 1,3- propane diols Facilitation.Even author has also investigated MoOxTo Pt Nanoparticles/WO3Promotion Effect, unfortunately, in this document, MoOxAddition on the contrary show whole catalyst Any activity is not gone out.The facilitation and WO of possible auxiliary agentxStructure and the dispersiveness of Pt have Substantial connection.Whole catalyst system and catalyzing is made a general survey of, current study hotspot is concentrated mainly on Pt/W/Al2O3 System simultaneously develops towards auxiliary agent addition direction.Either improve the pattern of each species, content is still Crystalline structure sets auxiliary agent species, there is the raising of different degrees of 1,3-PD yield, reacts Solvent is also generally fixed to the water phase condition of environmental protection, but is all also maintained at pressure higher substantially (5MPa is in the majority, highest 8MPa) and temperature (180-200 DEG C) higher.In order that glycerine Direct hydrogenolysis prepares that 1,3-PD reaction condition is gentleer, and yield is further improved, it is necessary to New catalyst system and catalyzing is further developed on the basis of existing.
The content of the invention
The present invention provides the catalyst and its system that a kind of direct hydrogenolysis of glycerine prepares 1,3- propane diols Preparation Method, compared with prior art, the inventive technique effectively reduces reaction condition and improves The selectivity of 1,3-PD, reduces the generation of 1,2-PD.
Patent of the present invention provides the catalyst that a kind of hydrogenolysis of glycerin prepares 1,3-PD, catalyst Carrier is the WO of hydro-thermal method synthesisx, active component is MoOxAnd platinum.Active component MoOx 0.001%-10% and 0.01%-10% are respectively with the mass content of Pt.
The carrier WO of catalyst of the present inventionxPreparation method be:
By 3 grams of WCl6It is dissolved in 100mL absolute ethyl alcohols, treats WCl6By Huang after being completely dissolved Color clear solution is transferred in the water heating kettle with liner, by this water heating kettle preheated 36h are placed in 160 DEG C of baking ovens, room temperature is then naturally cooled to, after suction filtration with absolute ethyl alcohol and Deionized water successively washing for several times, be then placed in 50 DEG C of vacuum drying chambers it is dry carrier WOx
MoO is prepared using step impregnation methodx-Pt/WOxCatalyst.Platinum acid chloride solution is used first Dipping WOxSupported carrier active component Pt, after being vacuum dried 6-12 hours at 50 DEG C, in Reduced 0.5-5 hours at 100~600 DEG C, Pt/WO is obtainedxCatalyst.Then by Pt/WOx Catalyst is added in metamolybdic acid ammonium salt solution, and 6-12 hours, Ran Houyu are dried under the conditions of 120 DEG C Calcining reduction 0.5-5 hours at 100~600 DEG C, final catalyst MoO is obtainedx-Pt/WOx
Catalyst be applied to glycerine water solution hydrogenolysis prepare 1,3-PD reaction in, reaction condition It is as follows:Reaction is carried out in batch (-type) tank reactor, and glycerine water solution mass concentration is 1-100%, reaction temperature is 100~300 DEG C, and preferably 120~180 DEG C, Hydrogen Vapor Pressure is 0.1-10MPa, preferably 0.5~7MPa, glycerine are that 0.5-50 is small with the catalyst reaction time When, preferably 6-24 hours.
The present invention compared with prior art, can significantly improve hydrogenolysis of glycerin and prepare 1,3-PD Selectivity, improve glycerol conversion yield, effectively suppress 1,2-PD generation.
Specific embodiment
Embodiment 1
The catalyst for using is WOxCarrier loaded active component MoOxAnd platinum.Catalyst It is Pt%=2% to constitute, MoOx%=0.1%, remaining is WOxCarrier.WOxCarrier is used Prepared by solvent-thermal method, specific preparation process includes:
A) by 3 grams of WCl6It is dissolved in 100mL absolute ethyl alcohols, treats WCl6After being completely dissolved Yellow transparent solution is transferred to rapidly in the water heating kettle with liner, this water heating kettle is in preheating 36h is placed in 160 DEG C of good baking ovens, room temperature is then naturally cooled to, with absolute ethyl alcohol and gone Ionized water successively washing for several times, be then placed in 50 DEG C of vacuum drying chambers it is dry carrier WOx, 2.5<X<3。
B) by platinum acid chloride solution incipient impregnation to WOxOn carrier, room temperature is dried in the shade, Pt's Loading is 2%, after 50 DEG C of baking ovens vacuum drying 6h, Hydrogen activation, and activation condition is 300 DEG C, Hydrogen Vapor Pressure is 0.1MPa, and hydrogen gas space velocity is 3600h-1, soak time is 1h, Then by obtained 2%Pt/WOxIncipient impregnation metamolybdic acid ammonium salt solution, MoO againxReason 0.1% is set to by loading.From batch reactor, glycerine water solution mass concentration is 5% (the common 12g of solution), catalytic amount is that (catalyst is 1 with qualities of glycerin ratio to 0.3g:2), react Temperature is 140 DEG C, and reaction pressure is 1MPa, and the reaction time is 12h.
Embodiment 2
Change MoOxLoad capacity be 0.05%, other conditions are same as Example 1.
Embodiment 3
Change MoOxLoad capacity be 0.2%, other conditions are same as Example 1.
Comparative example 1
Without MoOx2%Pt/WOxCatalyst, other conditions are same as Example 1.
Embodiment 1~3 and the direct hydrogenolysis of the glycerine water solution of comparative example 1 prepare 1,3- propane diols and are listed in Table 1, contrasts, MoO according to embodiment 1 and 2,3xOptimal loading be 0.1%.Implement Example 1 be free of MoOxCOMPARATIVE CATALYST understand, the component MoO of load regulation twoxCatalysis afterwards Agent shows very excellent choosing in the reaction that glycerine selection hydrogenolysis prepares 1,3- propane diols Selecting property and conversion ratio higher.It is contemplated that explanation MoOxTo the load with solvent structure Body and the Pt/WO for impregnatingxCatalyst has facilitation, is conducive to improving hydrogenolysis of glycerin preparation 1,3- Propane diols selectivity.
The hydrogenolysis of glycerin of table 1 prepares the catalytic performance contrast of 1,3- propane diols
* other include a small amount of methane, ethane, propane, methyl alcohol, ethanol, ethylene glycol, overall conservation of matter.

Claims (7)

1. application of the bimetallic catalyst in hydrogenolysis of glycerin prepares 1,3-PD, it is characterised in that: The catalyst is with WOxIt is carrier, 2<x<3, active component is MoOx(2<x<3) and Platinum;Wherein the content of Pt is the 0.01%-10%, MoO of catalyst weightxContent for catalysis The 0.001%-10% of agent weight.
2. application according to claim 1, it is characterised in that:Its carrier WOxUsing solvent Hot method is prepared, and detailed process is:
By 1-3 grams of WCl6It is dissolved in 100-200mL absolute ethyl alcohols, is transferred to after being completely dissolved In water heating kettle, and in 12-600h is placed in 120-180 DEG C of baking oven, be cooled to room temperature suction filtration, Washing, dry carrier WOx
3. application according to claim 1 and 2, it is characterised in that:Prepared using infusion process Bimetallic catalyst MoOx-Pt/WOxCatalyst, detailed process is:
1) WO is impregnated with platinum acid chloride solution firstxSupported carrier active component Pt, 40-140 DEG C Under dry 4-36 hours after, in being reduced 0.5-10 hours at 100~600 DEG C of hydrogen atmosphere, obtain Pt/WOx
2) and then by Pt/WOxAdd in metamolybdic acid ammonium salt solution, 4~36 are dried at 40-140 DEG C After hour, in being calcined at 100~600 DEG C and being reduced 0.5-10 hours, final catalyst is obtained MoOx-Pt/WOx
4. application according to claim 3, it is characterised in that:
Platinum acid chloride solution molar concentration 0.05-10M, metamolybdic acid ammonium salt solution molar concentration 0.05-10M。
5. application according to claim 3, it is characterised in that:Reduction temperature is preferably 300~400 DEG C.
6. application according to claim 1, it is characterised in that:The catalyst is used for glycerine Hydrogenolysis is prepared in 1,3-PD reaction, and reaction raw materials are glycerite, and its mass concentration is 1-100%, Hydrogen Vapor Pressure is 0.1-20MPa, and reaction temperature is 10~500 DEG C.
7. application according to claim 6, it is characterised in that:Hydrogen Vapor Pressure is preferably 0.5~7MPa, reaction temperature is preferably 120~180 DEG C.
CN201510882004.1A 2015-12-04 2015-12-04 Bimetallic catalyst prepares the application in 1,3- propylene glycol in hydrogenolysis of glycerin Active CN106824191B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108636440A (en) * 2018-04-16 2018-10-12 江苏七洲绿色化工股份有限公司 A kind of catalyst and preparation method thereof of glycerine water solution Hydrogenation 1,3- propylene glycol
CN111229204A (en) * 2018-11-28 2020-06-05 中国科学院大连化学物理研究所 Application of bimetallic catalyst in preparation of 1, 5-pentanediol from tetrahydrofurfuryl alcohol
CN115709065A (en) * 2022-11-23 2023-02-24 西安凯立新材料股份有限公司 Catalyst for preparing ethylene glycol by dimethyl oxalate hydrogenation, and preparation method and application thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101003462A (en) * 2007-01-25 2007-07-25 中国林业科学研究院林产化学工业研究所 Method for preparing 1,3 propylene glycol by using glycerol method
CN102728380A (en) * 2012-05-08 2012-10-17 中国科学院大连化学物理研究所 Catalyst used for preparing 1,3-propylene glycol through glycerin hydrogenolysis, preparation method thereof, and application thereof
CN104582839A (en) * 2012-08-30 2015-04-29 国立大学法人大阪大学 Catalyst for hydrogenolysis of polyhydric alcohol and method for producing 1,3-propane diol by using the catalyst

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101003462A (en) * 2007-01-25 2007-07-25 中国林业科学研究院林产化学工业研究所 Method for preparing 1,3 propylene glycol by using glycerol method
CN102728380A (en) * 2012-05-08 2012-10-17 中国科学院大连化学物理研究所 Catalyst used for preparing 1,3-propylene glycol through glycerin hydrogenolysis, preparation method thereof, and application thereof
CN104582839A (en) * 2012-08-30 2015-04-29 国立大学法人大阪大学 Catalyst for hydrogenolysis of polyhydric alcohol and method for producing 1,3-propane diol by using the catalyst

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108636440A (en) * 2018-04-16 2018-10-12 江苏七洲绿色化工股份有限公司 A kind of catalyst and preparation method thereof of glycerine water solution Hydrogenation 1,3- propylene glycol
CN108636440B (en) * 2018-04-16 2021-08-10 江苏七洲绿色化工股份有限公司 Catalyst for preparing 1, 3-propylene glycol by hydrogenation of glycerol aqueous solution and preparation method thereof
CN111229204A (en) * 2018-11-28 2020-06-05 中国科学院大连化学物理研究所 Application of bimetallic catalyst in preparation of 1, 5-pentanediol from tetrahydrofurfuryl alcohol
CN115709065A (en) * 2022-11-23 2023-02-24 西安凯立新材料股份有限公司 Catalyst for preparing ethylene glycol by dimethyl oxalate hydrogenation, and preparation method and application thereof

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